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Download Learning the bash Shell, 3rd Edition
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Special Characters and Quoting The characters <, >, |, and & are four examples of special characters that have particular meanings to the shell. The wildcards we saw earlier in this chapter (*, ?, and [...]) are also special characters. Table 1-6 gives the meanings of all special characters within shell command lines only. Other characters have special meanings in specific situations, such as the regular expressions and string-handling operators that we'll see in Chapter 3 and Chapter 4. Table 1-6. Special characters Character Meaning See chapter ~ Home directory Chapter 1 ` Command (archaic) substitution 86 Chapter 4
